Patch "drm/amdgpu/debugfs: fix error code when smc register accessors are NULL" has been added to the 5.15-stable tree

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This is a note to let you know that I've just added the patch titled

    drm/amdgpu/debugfs: fix error code when smc register accessors are NULL

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-amdgpu-debugfs-fix-error-code-when-smc-register-.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 3ec0e5a35bf5b1b78768de0e203321f7debbe1e1
Author: Alex Deucher <alexander.deucher@xxxxxxx>
Date:   Mon Nov 27 17:26:29 2023 -0500

    drm/amdgpu/debugfs: fix error code when smc register accessors are NULL
    
    [ Upstream commit afe58346d5d3887b3e49ff623d2f2e471f232a8d ]
    
    Should be -EOPNOTSUPP.
    
    Fixes: 5104fdf50d32 ("drm/amdgpu: Fix a null pointer access when the smc_rreg pointer is NULL")
    Reviewed-by: Christian König <christian.koenig@xxxxxxx>
    Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index 632d8df04ef4..aa057ceecf06 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -465,7 +465,7 @@ static ssize_t amdgpu_debugfs_regs_smc_read(struct file *f, char __user *buf,
 	int r;
 
 	if (!adev->smc_rreg)
-		return -EPERM;
+		return -EOPNOTSUPP;
 
 	if (size & 0x3 || *pos & 0x3)
 		return -EINVAL;
@@ -527,7 +527,7 @@ static ssize_t amdgpu_debugfs_regs_smc_write(struct file *f, const char __user *
 	int r;
 
 	if (!adev->smc_wreg)
-		return -EPERM;
+		return -EOPNOTSUPP;
 
 	if (size & 0x3 || *pos & 0x3)
 		return -EINVAL;




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